Ah ya C M ...informed you too late to reinforce Aris neck along the build Angus is right that the neck of Aris is a bit weak

Also please consider test out the retention capability of those Sanyo NiMH batteries installed in your Aris I have no experience on 2700 mA type (as shown) but I've already gave up all same type of Sanyo NiMH 2500 mA batteries due to their poor retention capability : Even not use - the battery power will disappear very quickly

See if you want catching up with Ah Yeung as he performed good test among different types of AA size NiMH batteries (4 x 1.2V for 4.8V)

Hi CM,
I don't have Aris but I wonder if it helps if you bridge the two servos with a graphite plate and then rest it somewhere on the "I-beam" structure.
For the RX battery, the type you are showing has very short self storage life. It is already confirmed by many users. The half-life is just 2 days. You will be surprised where has all the energy has gone after one week. On the other hand, this type of battery can sustain high current charge/discharge. So it is good for freshly charge and immediate use.
Some pilots stick to Nicad for its low internal resistance. With the evolution of technology, the Nimh has no higher resistance than the Nicad anymore while carrying good capacity.
I have a sophisticated battery analyser for bench testing. I will recommend the Sanyo's eneloop. Its self life for a fully charged pack is one year! (GP has similar product but I have no idea on its performance).

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